[SeanE]

It would help in setting up DOF shots(in wireframe plan view) to have graphics that mark the limits of focus. That way it would be obvious at a glance, what is in focus and what is not. Fire window doesn't always display detail sufficient to determine this, and test renders are time consuming.

[seghier]

it's better if we can see this effect in viewport (opengl) wihout need use fire